Script path does not recognize subfolders when using environment variables

I’m having an issue with Substance Designer’s script path setup.

When I set a path using an environment variable, only scripts placed directly under that root directory are recognized. Scripts located in subfolders are not detected, which makes it difficult to organize modules in a hierarchical folder structure.

Because of this limitation, I’m unable to properly separate and manage my scripts.

Is there any way to make Substance Designer recognize scripts inside subdirectories, or is this a known limitation?